is 2 1847777 - 1
has 556237 decimal digits
takes 0.100 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26716.080968.6567%500000150000000.10155.0745%16.182470.2472%1.5905%
PrimeNet2570.010463.1579%90001600000.00143.0224%0.011764.2714%1.1135%
GPU722610.166265.5738%90001500000.00131.6306%0.167666.1351%0.5613%
Difference+6+15.9147+3.0829%+491000+14850000+0.1002+3.4439%+16.0148+4.1121%+4.1121%

Known prime factors (5 factors, 273.7 bits, 0.01481055% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1847777513682007928.936139
139
-11391.994e-116.701e-71.116e-6
1847777523235900022971445.57314158524
22 × 3 × 23 × 43 × 1193
2014-01-234311934.098e-68.311e-69.576e-6
184777736973635675733100171961.6811000489660704
25 × 32 × 1013 × 3429341
2015-08-29101334293410.26860.01480.0275
184777752005271588518720471962.1731407238849399
17 × 82778755847
2016-07-0617827787558470.6245354.77662.61
1847777465949162557534494021512375.30312608371100991475
52 × 61 × 281887 × 29330137
2020-12-15281887293301375,212.30.14670.2348

26 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1847777268776867258250575700792374.509
184777718992691379997380091657641192890.618
184777726714172284170374488101583292891.110
18477772393497009825235718606987579705732104.239
184777719345933539913601238711692310904933107.254
184777727211025085557583460357148009195933107.746
1847777243801329435740715024335971536674084737120.875
18477771922823964931444757017384011274739479938123.855
18477779937657968071433290899108200632097018134341136.190
184777713977813978476566185986264726159804368171342136.682
184777717227834579815219018479062525717282964656742136.984
184777724231812745247439405864740558637929857309742137.476
1847777125236356213819468025315955701253617933583992946149.811
1847777987720073413682160194317152801318804437168159346152.791
18477778849628643223483394556894925688943027871763721996950165.920
184777712447446204226884385615487500695432995428070316567
9
51166.412
184777710060905278766402022127475248536377697699891758533
03
52169.427
184777790142215318164613171293644926544197637825426052281
64399
55182.556
184777712678954350947619418981436487618133093658225707052
403809
56183.048
184777751681060158336198748952998955109903082645196822060
0622619121
60198.363
184777789593821620536475836203044026397893308091694479038
9316812649
60199.157
184777746304434080060942050208754312212591016802823970166
12181404268793
64211.493
184777765129507176561554950145581907027132571434763532576
72842781564663
64211.985
184777746022734104837169324247782914989430815072410960023
5378571680381306543
69228.093
184777746878703892118831499607675173849509384449694652551
832775468677350628654753
74244.730
184777724080746700862312847213290295907089896569453739659
993131631130547106370085231129271
83273.666
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-08-29T11:02:00alpertronManual testing50000015000000121961.6810.1010.2000.2035.074%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-01-23T13:39:00TJAOIManual testing??45.573141.56153e-60.2143.33690e-6
2016-07-06T14:35:17TJAOIManual testing262263*62.173190.2920.2040.594


ECM factoring results:

Old Calculation Method

Total ECM effort:19.788 GHz-days
Estimated T-Level:24.607
DigitsB1CurvesCompleteFacMiss
2011000258 / 1002.5807.480%
2550000258 / 2800.92139.729%

New Calculation Method

Total ECM effort:19.788 GHz-days
Estimated T-Level:24.607
DigitsB1CompleteFacMiss
201100010.6310.002%
25500000.97837.591%
302500000.06293.980%
3510000000.00399.709%


ECM Summary

B1B2factorcurvesGHz-days
500005000000362.489
50000500000010.069
50000660000022117.23


Lucas-Lehmer results:
No L-L results for M1847777


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-04T05:42:55Oliver KruseGTX-0
513682007
52323590002297
3697363567573310017
5200527158851872047
67D8FA98CAA9F0EDno
2017-10-05T21:07:30Oliver KruseManual testing
513682007
52323590002297
3697363567573310017
5200527158851872047
67D8FA98CAA9F0__no
2017-11-11T02:55:10kkmrkkblmbrbkc4.xlarge
513682007
52323590002297
3697363567573310017
5200527158851872047
67D8FA98CAA9F0__no
2020-12-16T14:42:04Maciej KmieciakAsrock
513682007
52323590002297
3697363567573310017
5200527158851872047
46594916255753449402151
6609286AB8036A84no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
267
263
2
220
230
240
250
260
270
280
290
2100
Last modified: 2021-06-18T16:47:33+00:00